The Fatigue Tester is a compact, bench mounted
unit consisting of a rigid welded frame, variable speed motor and control,
variable throw crank connected to the reciprocating platen, a failure cut off
circuit in the control box, and a cycle counter which will automatically shut
off the machine after completion of pre-set number of cycles.

The motor torque is transmitted through an
elastomer- cushioned coupling to the main drive shaft to a test object
through a connecting rod and reciprocating platen connected to the free end
of the test specimen. The variable throw crank stroke is infinitely
adjustable from 0 to 2 inches. The other end of the specimen is clamped in
the adjustable vise assembly. To measure the temperature, thermocouples were
anchored over the length of the specimen using epoxy.